Sylvania



y ssheens-snee 2f HJA. HOUSE. VP aper Bag Machine.

N.PETERS. FHOO-U'THOGMPNER, WASHINGTON. D. CL

5 Sheets-Sheet 3.

H. A. HOUSE. w Paperv Bag Machine.

No.. 236,951. Patentedlan. 25,1881.-

UNITE-1 *STATES N5l).A'riixrr OFFICE..

HENRY A.` HOUSE', OE BEIDGEPOHT, CONNECTICUT, AssIeNoE To THE UNION PAPER PAGr MACHINE COMPANY, OP PHILADELPHIA, PENN sYLvANIA.

PAPER-BAG MAcHlNE.

. SPEGIFICATIONforming part `of Letters Patent No. 236,951, dated January 25, 1881.

Application filed June 7, 1879.

To all whom it may concern:

f Beit known that I, HENRY A. HOUSE, of the city of Bridgeport, county of Fairfield, and State of Connecticut, have invented certain new and useful Improvements in Machines for Making Paper Bags and lI do hereby declare that the following specification, when taken'in connection ,with the accompanying drawings, is such a full, clear, and exact description thereof' as will enable others skilled in the art to make and use the same.

This invention consists, primarily, in mechanism for turning inwardly the cornersfof the sides of a bellows-sided bag at the bottom end thereof, so as to provide the same with triangular folds, whereby the operation of opening the bag and converting it in to a square form to receive its contents is facilitated, said mechanism consisting, essentially, in means for propelling the bag and -turning guides and: folders, by the conjoint operation of which the sides of the bag are folded inwardly at the bottom to form saidtriangular folds.

The invention also comprehends various constructions and combinations of co-operating mechanisms, all of which will be more particularly hereinafter described. f This invention, though capable of operating uponbags fed to it by hand, is more particularly designed to be attached to and form part ofthe well-known union paper-bag machine, as will be fully explained.

In the drawings, Figure l represents a side ,elevation of my -'improved apparatus; Fig. 2, an end elevation thereof; Fig. 3, a plan view of the same, with the upper parts removed; Fig. 4, a sectional elevation on the line as of Fig. 3; and Figs. 5 to 10, inclusive, illustrate details of some of the mechan isms and their mode of operation. Figs. 11 and l2 illustrate my improved apparatus as applied to a complete bag-making machine, the former77 ofwhich isillustrated iuFig. 13 by asectional view. Figs. 14 and 15 represent sections of abag-tube produced by said bagm'achine, while Fig. 16 illustrates a plan of suchbag-tube, and Fig. 17 the bag as now made therefrom. Fig. 18 represents such a bag as finishedby myimpipved apparatus,

Fig. 19 illustrating the same in perspective; 5o Fig. 20, the expanded condition of the same when in use; Fig. 21, an external view of the bottom thereof, and Fig. 22 an internal view of said bottom.

Machines heretofore employed for the rapid 5 5 production of paper bags have operated upon a continuous web of paper, applying paste to one of its edges, turning the opposite edges centrally and uniting them to form a Hat tube, the sides of which tube were turned inwardly 6c to form bellows-like folds'7 the tube being afterward cut into bag-lengths and the latter converted into bags by a transverse fold near a closing lip that is pasted down onto the bagbody. Such machines are constructed sub- .stantially according to the United States Patent No. 38,452, improved, as shown in the United States Patent No. 138,144, and by Figs. l1 and 12 of the accompanying drawings. The pricipal parts of those machines, 7o together with their operation, will be first briefly described.

The end of a web of paper wound upon a shaft or spool, 51, at one end of the machine, having one edge led over a paste-disk, 52, is then directed under a forming-roller, 53, and thence passes under the former 54 supported by a roller 55, and onward through the machine and into the nip of thefeeding or drawing rollers 56 57. These rollers are geared to- 8o gether, by gears 58, to run in unison, and driven from a toothed-wheel, 59, on the shaft 61, through a pinion, 60, on the shaft of one of them. The former 54 is provided at its rear end with uudercut sides forming -shaped recesses 62, as in Fig. 13, in which recesses guide-bars 63 63 extend, While turning-fingers 64 64 overlie the top of this former. As the web of paper passes through these devices its central portion is held snug] yagainstthe under 9o side of the former, while its sides are turned inwardly and outwardly by being forced into the recesses 62 62 by the guide-bars 63 63; and said sides of the web are laid down in succession upon the topv of the former by the t t "serieta will be that shown in Fig. 14, the plies of which will be pressed down tlat, as in Figs. 15 and 16, iu passing under the pressing-bars 65 65 which overlie this said former. This tube will be drawn through the machine by the feeding rollers 5657,and be advanced at a regular speed beyond the end et the former and into the nip ot' the carrying-rollers 66 67,which, geared together by wheels 70, are driven at an appropriate speed by a pinion, 75, and an intermediate, 72, from a pinion, 73, on the shaft 74 of roller 56. The end ot' the former is provided with a. serrated cutter 16, and is surmounted by a similar cutter, 76, with which co-operates a revolving striker, 77, that is hung on a shaft, 78, and revolved b v a pinion, geared by an intermediate, 80, to the toothed wheel 59. This striker operates in an upward direction, and by forcing the plies of the tube against the serrated cutters 16 and 17 severs a bag-length from said tube, so as to leave the lower ply extending beyond the upper ply, thus forming a projecting lip, 83, as in Fig. 16. The bag-length,then within the embrace of the carrying rollers 66 67, which run slightly faster than the feedingrollers 56 57, is carried to another set of propelling-rollers, 68 69, driven in concert by frictional contact through a pinion, 7l, on the lower roller, that is driven by a pinion, 8l and an intermediate, 82, from the pinion 75, which rollers 68 69 advance it so that its projecting lip 83 overlies the folding-rollers 84 85, which are geared together by pinions 86 87, and suitably driven. The baglength is doubled through these rollers by means of a vibrating folding-blade 88, that is operated by a crank, 89, on the end of the striker-shaft, and a suitable connecting-rod, 90, and levers 91 and 92. This folding-blade, in its highest position, receives a line of paste on its rear face from the paste-roller 93, (which is properly advanced by a ratchet-wheel, 94, and reciprocating dog 95,) and when it acts to double the bag-blank through the rollers 84 85 it deposits its paste upon the lip 83, so that said lip will, when folded onto the body portion, adhere thereto and complete the bag. The bag emerges from between the folding-rollers 84 85 in the condition shown in Fig. 17.

Such a bag, when used, requires to be given the square form shown in Fig. 20, by inserting one hand within its mouth, and with the aid of the other distending the bottoni into rectangular form.

It has been found by experience that when such a bag is provided with inward triangular folds at the sides of its bottom, as is illustrated in Figs. 18 and 19, it will, when filled with its contents, readily assume the rectangular form shown in Fig. 20.

My improved apparatus is designed to provide such bags with these triangular bottom foldsand thus finish the same complete for use. Said apparatus, now to be particularly described, though well adapted to form part of the machine hereinbefore described, is capa.-

ble of independent operation, as will presently appear. Its mechanisms, their structure and operation, will rst be explained,and their combination with the aforesaid machine will then be set forth.

The means for propelling the bags consist of feeding-rollers 85 84, forwarding-rollers 32 35, and delivering-cylinders 30 33, suitably journaled in the framework or brackets, and geared together, so as to run in unison. In the present structure propelling aprons 43 44 are stretched, respectively, over the rollers 85 84, against the rollers 32 35, antl around the cylinders 30 33, said aprons being moved at the proper speed in the direction indicated by the arrows by means of the cylinders 30 33, which are geared together by the wheels 36 37, and driven in proper time by the movement of the main shaft 96. These rollers 85 84 32 35 and cylinders 30 33 are cut away or otherwise provided with narrow nipping-surfaces9 9, Sac., at such points as to seize the bag Iljust inside ot' the edges ot' its bellows-folds and bridge the center portion of the bag, so as not to injure its freshly-pasted central seam, while permitting a free manipulation of its bellows-like side folds as a positive onward feed ot the bag is accomplished.

The turning-guides 45 46 are of peculiar form. (See Fig. 5.) Their shanks are formed so as to provide straight inner edges, which constitute thin knife-like guides 10, and their heads are formed so as to constitute separate inclined wings 1 2 andr 7 8, the angle of whose union forms nearly horizontal seats 11 1l. The upper edges of said wings also incline inwardly, so that their forward edges form a junction with said horizontal seat and with their blade-like inner edge. Said turning-guides-are xed in stationary positions at opposite sides of the path of travel of the bags, with their shanks standing in the plane in which the bags travel, said shanks depending nearly to the point of contact of the cylinders 30 33, while the heads of said guides stand a slight distance from the rollers 32 35.

The folders 47 48, which co-operate with the turning-guides 45 46, are triangular in form, (see Figs. 7 8,) being each constructed with two ilukes, as 3 4 or 5 6, which spread laterally and longitudinally from their points 12. These folders are attached to arms 17 18, that are pivoted to the frame-work joined together by a connecting-rod, 19, and thus vibrated in concert by means of an arm, 20, whose stud or friction-roller runs in the slot of a cam, 21, fast on the shaft 96. These folders, in their forward movement, enter the bellows side folds of the bag, and while its bottom edge is supported on the nearly horizontal seat l1 force the outer parts ot' the bag-bottom to spread over the guides and the central portion of said outer parts to double into the said folders as the bag is propelled past these mechanisms, so that the triangular fold is formed and guided over the knife-like edges 10 of said folders to the cylinders 30 33, which press the same flat.

IOO

IIO

In order that this apparatus may be handfed it is shown in Figs. 1 2 4 as provided with a feed-chute, constituted by open and hanged edge guides, 41 42, and the side conductors, 40 50, which consist of wires extending nearly to the forwarding-rollers 32 -35 and Haring outwardly; but as this flaring of their forward ends constitutes a part of the invention made the subject-matter of a companion application, the function thereof' is not set forth herein.

The bag which this apparatus is designed to manipulate and nish is that constituting the subject-matter of Patent No. 123,811, such a one being produced by the bag-machine hereinbefore described, as is illustrated in Fig. 17, the same consisting of a'tube having infolded Vor bellows sides with its bottom closed by a simple straight seam or overturned lip. Such a bag, fed in proper time between the edge guides, 41 42, and side conductors, 40 50, to the nip of the rollers 85 84, or the aprons 43 44 running over them, will be propelled onward through the apparatus. When its bottom ed ge engages and rests momentarily upon the nearly-horizontal seat 11 of the turning guides 4546, as in Fig. 7, the triangular folders 47 48 will have descended, their points will have entered the longitudinal side folds of the bag, and their iiukes will have separated and spread the same laterally, the folding-guides forming the necessary temporary resistance to the onward movement of the bag, and when the points of said folders reach the corner formed by the junction of the inward side folds of the bag with its bottom, as in Fig. 8, said folders will, aided by the propelling devices, force the bag downward past the folders, the central portion of the sides of its bottom, now within the control ofthe folders and turning-guides, being forced within the triangular folders, or between their iiukes, and pressed by said folders against the knifelike forward edges of the turning-guides, as in Fig. 9. The triangular folds thus imparted to the bag sides embrace the said guides, and are heldin place by them as the bag is carried onward by the forwarding-rollers 32 35 to the cylinders 30 33, during which movement said bag is stripped from offthe folders 47 48, which then make their retrograde movement, as in Figs. 9 and l0. After the triangular folds are made they form a continuation of the inward side folds of the bag, which, as will be readily apparent, embrace the edges of the folding-guides as the bag passes through the apparatus. 1n passing through the cylinders 30 33 the said triangular folds are pressed down dat, as is shown in Fig..18, which illustrates the finished product, by means of pressing-surfaces formed upon the peripheries of said rollers by raised portions 101 102, (see Figs. 1 and 3,) which pressing-surfaces are so shaped as to press flat the newly-formed triangular folds.

In combining this apparatus with the bagmachine hereinbefore described, it is secured in such relation thereto that the rollers 85 84 become the folding-rollers of said machine, as is seen in Figs. 11 and 12, the necessary motion being communicated to the main shaft 96 by means of a toothed wheel, 22, fast thereon, and a train of intermediate toothed wheels, 23 24, connecting it with the wheel 79 on the shaft of the striker 77. It will thus be seen that each time the striker 77 severs a baglength from the formed tube the folding-blade 88 will in proper concerted time paste the bottom of a bag and, doubling it into the nip of the rollers 85 84, form its straight-folded bottom edge. Each bag thus produced by the machine will be forwarded by these rollers 85 84 in proper time to the apparatus for forming its triangular side folds and completing it; In this use of this apparatus the edge guides, 41 42, and the side conductors, 40 50, will, of course, be omitted.

It will be apparent that the aprons 43 44 are not essential to the successful operation of the apparatus and may be omitted; that guide-rods lying in recesses cut in the rollers 85 S4, 32 35 and cylinders 30 33, or plates through recesses in which the enlarged parts of said rollers and cylinders protrude, may constitute conductors properly guiding the bags while propelled by the rollrsand cylinders through the apparatus; and that the triangular folders may reciprocate instead of vibrate; but such variations, though within the scope of myinvention, are not specifically claimed herein, as they are contained in a companion application.

What I claim is- 1. The combination, with means for propelling the bag onward, of turnin g-guides that temporarily support the bottom edge of the bag, and moving folders that enter and act within its bellows side folds, which turning-guides and moving folders are constructed so as to impart triangular folds to the bottom corners of the bag sides, all substantially as described.

2. The combination of the edge-guides and side conductors with the turning-guides, moving folders, and means for propelling the bag onward, all substantially as described.

3. The combination, with mechanisms for forming abag-tube with bellows-like side folds, means for severing therefrom a bag-length, pasting its leading end and folding the same transversely to form a bag, of means for propelling the bag onward, and turningguides and moving folders operating to impart triangular folds to the bottom corners of the bag sides, all substantially as described.

4. IIhe combination, with turning guides that temporarily support the bottom edge of the bag, of the moving folders, that enter and act within its bellows side folds, which turning-guides and moving folders are constructed and adapted to conjointly operate so as to form triangular inward side folds at the bottom corners of the bag, all substantially as described.

5. The combination, with the rollers 32 35 and turning-guides, of means operating upon the inner surface of the closed bottom portion IOO of the bag and forcing the same to fold in- Wardly over the said turning-guides, whereby the outer portions ot' said bag-bottoni nre doubled to provide the saine with triangular inward folds, all substantially as described.

6. The combination of the rollers S5 84 32 35, turning-guides 45 46, and folders 47 48, snbstantially as described.

7. The combination of rollers 255 S4 32 35, cylinders 3t)33,turningguides 45 4G, and folders 47 4S, substantially as described.

8. The combination ot' aprons 43 44, turningguides 4.3 46, and moving folders 4T 4S, substantially as described.

9. The combination, with the rollers 84 S5 of the folding-blade 8S, ot' the turning-guides and moving folders, whereby an open-ended tube is folded transverselyY to close its bottom scribing witnesses.

HENRY A. HOUSE.

Witnesses:

H. T. MUNSON, GEo. H. GRAHAM. 

